Dump truck



R.' MCELDowNEY.

' DUMP TRUCK.

APPLICATION FILED .IULY 24.1920.

Patented Septr 5, 1922.

2 SHEETS-SHEET I.

R. IVICELDOWNEY.

DUMP TRUCK.

APPLICATION F|LED JULY 24.1920.

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IIJLI U 3 `within the lscope of the appended claim To all whomz' mayconcern l Patented Sept. 5, 1922.

. agira STA'lIfELS:

DUMP TRUox. y

Application led'vuly 24,`

Be it known that I," ROBERT MoELDowNnY, a citizen of the United States,residingat Canton, in the county 'of Stark and4 State of Ohio, haveinvented a `new`anduseful Dump Truck, ofwhich the ,following is aspecification'. i

This invention relates to dump trucks and has for its object theprovision of a dump truck upon which the body or box is pivotallymounted and arranged to be ltilted Vby means of a cam arm connectedthrough a chain of gears with an operating handle or frame by means ofwhich the box when loaded to capacity may be easily and readily tiltedinto position to dump the load therefrom.

With these objects in view the invention consists in the novelconstruction and' arrangement of parts, hereinafter described,illustrated in the accompanying drawings, and particularly pointed outin the append-l ed claim, it being understood that various changes inthe form, proportions, size'and minor details of construction may bemade without departing'from the spirit or sacrificing any of theadvantages'of the invention.

The invention thus'set forth yin general terms is illustrated in theaccompanying drawings forming'part hereof, in which- Figure 1 is alongitudinal sectional view through a truck embodying the inventionshowing the box in the normal or lowered position.

Fig. 2 is a side elevation of the truck showing the box in the dumped ortilted box.

Fig. `3 is a section on the line 3--3, Fig. 2.

Fig. 4 is a plan View of the frame of the truck with the box removed.

A practical embodiment of the invention is disclosed in the accompanyingdrawings, forming a part of this specification in which similar numeralsof reference indicate corresponding parts throughout the several views.

The truck comprises the rectangular frame 1, supported in the usualmanner upon the wheels 2, bearings 3 bein@` provided near the rear endof said frame and supporting a shaft 4, said shaft being also journaledthrough the bearings 5 carried upon the under side of the base 6 uponwhich thebox or body 7 of the truck is Xed. The usual endq ROBERTMCRLDOWNEY, on orrIo,` nssrGiiiioR T oLRvELAivD, orrro.

426, said shaft being supported in the bear-j4 ings 27 mounted upon thebase 6 of .the box l l or body of the truck, a roller bearing pref- 11920. vserai No. 398,696.

Av shaft 94VK is journaledffiniv mounted` uponthejrectangul'arz'frameff1, said shaft being. provided with the squaredend 11 arranged to receive thencrank y1,2 byme'ans" f feo of whichthe"'shaft"ffmayf'be rotated. ratchet 13 is fixed upon the shaft 9 and apivoted pawl 14 co-operates therewith to, hold the .shaft 9 in anydesired position, a pin 15 being provided in the frame' l to limit vthedownwardmovement of the pawl and the shaft 22, said shaft beingjournaled Vin the bearings 23 also mounted upon the frame 1. A cam 24'isfixed upon the shaft 22. and

engages a roller 25 mounted upon the shaft erably being provided betweenthe shaft 26 and the roller 25. The outer-,free end of the cam` arm 24is curved upwardly form,-

ing a hook 28 which acts as astop, being arranged to engage the roller25 when the boxeo j or body 7 has been raised to its uppermost fposition.

lThe box or body 7 is normally in the lowered position as bestillustrated` in Fig. 1.

'The forward end of the base 6 thereof rest-` ing upon the cross piece29 which is mount l edupon the `rectangular frame 1, the roller 25engaging the rear portion of the cam arm 24 at a point near therock'shaft 22 upon upon said arm and tilting the forward end g of thebox or body upwardly, said box pivot?. ingupon the shaft 4. As the arm2,4 reaches lthe upper` limit of its movementthe hook c 23 @hm-'e011engage? 'Ph-9 lfQller 25 preventing 1110v the roller from slipping overthe end of said;

arm, the pawl 14 holding the lratchet 13 against movement in the reversedirection.

When itt-isf` desiredr to lower the boa` or'` body back to the normalposition the pawl 111 `is disengaged from the ratchet 13 and the crank12 Irotated in the opposite direction" slowly lowering the box or bodyof the truck to the normal position.

It will be evident from the yabove'descrip-` tion and an inspection ofthe drawings that y l claim: In a truck, the combination of a traine, abody pivotally mounted near its rear end upon the' franlefa roller uponthe under side of the body forward of the pivotal point of the body, arock shaft in the frame beneath andl forward of the roller, a cam armhaving a forwardly disposed arcuate portion for engagement with'theroller and an inwardly disposed portion connected to the rock shaft` andmeans for rocking said rock shaft to' tiltkthe body upon its pivot.

ln testimony that I claim the above7 l. have hereunto subscribedr myname.

ROBERT MCELDOWNEY;

